Description
ZF BW 361 5.1 Gearbox
The ZF BW 361 with a roughly 5.1 (specifically 5.172:1) gear ratio is a heavy-duty marine propulsion transmission built by ZF Friedrichshafen. It handles high-input power up to roughly 970–1143 kW (1300–1530 hp) at speeds around 1800 RPM, utilizing a robust design suited for commercial and large marine craft.
Technical Overview
- Model Family: ZF 3600 Series (BW 361 variant)
- Reduction Ratio: 5.172:1 (often noted as 5.1)
- Max Input Power: Up to 1143 kW (1530 hp) depending on duty cycle and application RPM
- Clutch Type: Hydraulically actuated multi-disc clutches
- Application: Heavy-duty marine diesel engine setups (such as commercial workboats or large private vessels)
Core Features
- Designed for reverse-reduction operation with robust torsional capability.
- Frequently paired with heavy industrial marine engines (e.g., Caterpillar or Cummins configurations).
- Integrates options like cooler connections, brackets, and flexible couplings
Expanded Technical Specifications
- Exact Gear Ratio: 5.172:1
- Power Rating Continuous: 970 kW (1,300 hp) up to 1,143 kW (1,530 hp) @ 1,800 RPM
- Dry Weight: Approximately 1,420 kg to 1,760 kg (3,130 to 3,880 lbs) depending on exact brackets, oil cooler volume, and top-mounted Power Take-Off (PTO) configuration.
- Physical Dimensions: Roughly 100–130 cm length × 120–140 cm width × 130 cm height.
- Input Coupling Size: Typically accommodates an 18-inch flexible coupling arrangement
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